upwork app development

1. When to use delegate and block;2. Retain cycle caused by block;3. Careful use of nsmutable ..., may inadvertently modify the data4. AddressBook frame (after iOS9 replaced with contact frame, seemingly better use)5. Custom Table View cell6. Uitableviewrowaction7. Uiactivityviewcontroller, and Uialertcontroller8. Once again confirm the Viewcontroller life cycle, when will the geometry information for the view be determined (and what else should be done in viewdidlayoutsubviews?). ）9. Mfmessagec

Data Persistence and compilation of static link libraries and App static links in the app development process Record Data Persistence first. Common Data Persistence solutions provided by iOS clients: NSUserDefaults stands for user settings, NSKeydArchiver stands for archiving, plist file storage, and SQLite databases (including the upper-layer Core Data and FMDB

Character string processing tools and App tools in the app development process Record string processing is not a simple task. NSString is a type that can be seen everywhere in the code, and it is also a wide range of objects for application and processing. Here, we only need to record and explain it in a regular way. # Pragma mark -- [calculate the string size +

Reference Answer:In iOS, it is usually uiwebview to implement, of course, after iOS8 can use Wkwebview to implement. There are several ways to do this: By implementing the UIWebView proxy method to intercept and determine if scheme is a good deal, then iOS calls the local related API to implement: 123 - (BOOLwebview: ( Uiwebview *) Webview Shouldstartloadwithrequest: ( Span class= "crayon-t" >nsurlrequest *) Span class= "crayon-v" >request Navigationtype: (uiw

MoveNode. If the value of MoveNode is the same, it is added to the list.The final step is to randomly select one of the best moves (AI can be predicted to be very bad)Bestmoves = Self.bestmoveswithmovetree (moveTree) Randombestmove = Random.choice (bestmoves)That's all the content. AI generates a tree, fills it with sub-nodes to any depth, traverses the tree to find the score of each move, and then randomly chooses the best. There are a variety of places to optimize, pruning, razors, stationary

All along, app development is divided into Android version and iOS version, the same app needs to write two versions, the version is different, the cost is added. Cordova's emergence is a stream of clear, it can be H5 page packaged into Android or iOS version, the implementation of Android, iOS, PC-side page unification. The content is written in H5, and the diff

;} In the development of software, consider the use of the appearance of the pattern is generally divided into three kinds of situations. In the first case, in the initial stage of design, it is necessary to have a conscious separation of two separate layers to create a façade between layer and layer, which can provide a simple interface for complex subsystems, thus greatly reducing the coupling. In the second case, subsystems tend to become more

Use the BlackBerry JDE 6.0.0 to create a new workspace, rimgisenginetutorial. First, add a new Lib project, Libgisengine, where you'll add the Guide Bee Development Library. Then add the Helloworldrim BlackBerry app and set the Libgisengine as a dependent library (project Dependencies) for the projects Helloworldrim. Also for simplicity, a common class Mapdemorim is designed as the base class for subsequen

Java.util.concurrent.FutureTask.run (Futuretask.java:266) at Java.util.concurrent.ThreadPoolExecutor.runWorker (Threadpoolexecutor.java:1142) at Java.util.concurrent.threadpoolexecutor$worker.run (Threadpoolexecutor.java:617) at Java.lang.Thread.run (Thread.java:745) caused by:java.lang.ClassNotFoundException:org.apache.commons.lang3.StringUtils at Org.apache.catalina.loader.WebappClassLoader.loadClass (Webappclassloader.java:1320) at Org.apache.catalina.loader.WebappClassLoader.loadClass (Weba

Web app development memo on mobile terminals and webapp development memo Recently, I want to create a mobile html5 page and make some knowledge reserves. Important points should be recorded for future reference. 1. devicePixelRatio: Ratio of the physical pixel of the device to the independent pixel of the device. Px in css can be seen as an independent pixel of t

First introduce yourself, I nest, now work in XX share car, as the main process, the current technology stack is. NET Core+angular. Today I am talking about reactnative from the Zero Foundation development, hope can be the novice to get started, play a guiding role. At present, learning react native cross-platform development of more people, dry reactnative deve